<template>

  <div class="app-container">

    <h2 style="text-align: center;">发布新课程</h2>

    <el-steps :active="3" process-status="wait" align-center style="margin-bottom: 40px;">
      <el-step title="编辑课程基本信息"/>
      <el-step title="编辑课程大纲"/>
      <el-step title="课程最终发布"/>
    </el-steps>

    <div class="ccInfo">
      <img :src="coursePublish.cover">
      <div class="main">
        <h2>{{ coursePublish.title }}</h2>
        <p class="gray"><span>共{{ coursePublish.lessonNum }}课时</span></p>
        <p><span>所属分类：{{ coursePublish.subjectLevelOne }} — {{ coursePublish.subjectLevelTwo }}</span></p>
        <p>课程讲师：{{ coursePublish.teacherName }}</p>
        <p>讲师简介：{{ coursePublish.description }}</p>
        <h3 class="red" style="margin-top: 10px">￥{{ coursePublish.price }}</h3>
      </div>
    </div>

    <div class="el-form-item-my">
      <el-button @click="previous">返回修改</el-button>
      <el-button :disabled="saveBtnDisabled" type="primary" @click="publish">发布课程</el-button>
    </div>
  </div>
</template>

<script>
import course from '@/api/edu/course'

export default {
  data() {
    return {
      saveBtnDisabled: false, // 保存按钮是否禁用
      courseId: '',
      coursePublish: {}
    }
  },

  created() {
    this.init()
  },

  methods: {

    init() {
      if(this.$route.params && this.$route.params.id) {
        this.courseId = this.$route.params.id
        this.queryCoursePublishInfoById()
      }
    },

    // 课程最终发布按钮
    saveBtnDisabled() {
      
    },

    // 根据课程id获取课程最终发布数据
    queryCoursePublishInfoById() {
      course.queryCoursePublishInfoById(this.courseId)
        .then(response => {
          this.coursePublish = response.data.coursePublishInfo
        })
    },


    previous() {
      this.$router.push({ path: `/course/chapter/${this.courseId}` })
    },

    publish() {
      this.$confirm('确认课程最终发布, 是否继续?', '提示', {
      confirmButtonText: '确定',
      cancelButtonText: '取消',
      type: 'warning'
      }).then(() => {
        // 调用后台删除的方法-根据课程id修改课程状态
        course.updateCourseStatusById(this.courseId)
          .then(response => {
            // 提示信息
            this.$message({
              type: 'success',
              message: '课程最终发布成功!'
            });
            // 跳转到课程列表页面
            this.$router.push({path: '/course/table'})
          })
      });
    }
  }
}
</script>

<style scoped>
.ccInfo {
    background: #f5f5f5;
    padding: 20px;
    overflow: hidden;
    border: 1px dashed #DDD;
    margin-bottom: 40px;
    position: relative;
}
.ccInfo img {
    background: #d6d6d6;
    width: 500px;
    height: 278px;
    display: block;
    float: left;
    border: none;
}
.ccInfo .main {
    margin-left: 520px;
}

.ccInfo .main h2 {
    font-size: 28px;
    margin-bottom: 30px;
    line-height: 1;
    font-weight: normal;
}
.ccInfo .main p {
    margin-bottom: 10px;
    word-wrap: break-word;
    line-height: 24px;
    max-height: 48px;
    overflow: hidden;
}

.ccInfo .main p {
    margin-bottom: 10px;
    word-wrap: break-word;
    line-height: 24px;
    max-height: 48px;
    overflow: hidden;
}
.ccInfo .main h3 {
    left: 540px;
    bottom: 20px;
    line-height: 1;
    font-size: 28px;
    color: #d32f24;
    font-weight: normal;
    position: absolute;
}
.el-form-item-my {
    width: 211px;
    margin: 0 auto;
}
.ccInfo .main h3[data-v-19d9202e] {
  bottom: 0;
}
</style>